Wikipedia
The Ibāḍī movement, Ibadism or Ibāḍiyya, also known as the Ibadis (, al-Ibāḍiyyah), is a school of Islam dominant in Oman and Zanzibar. It is also found in Algeria, Tunisia, Libya and East Africa. The movement is said to have been founded 20 years after the death of the Muslim prophet Muhammad, predating both the Sunni and Shia denominations. Some historians believe that the denomination is a reformed sect of the Khawarij movement; Ibāḍīs, however, deny anything more than a passing relation to the Khawarij and point out that they merely developed out of the same precursor group called Muhakkima.
Although their strict adherence to the sharia in public and private matters has been described as puritanical, the character of their denomination is considered to be one of both moderation and tolerance toward other views and religions.